using System;
using System.Data;
using System.Windows.Forms;

using Spire.Xls;

namespace ExcelSheetToDataTable
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Workbook workbook = new Workbook();
	             
	            workbook.LoadFromFile(@"..\..\parts.xls",ExcelVersion.Version97to2003);
	            //Initialize worksheet
	            Worksheet sheet = workbook.Worksheets[0];

                DataTable dataTable = sheet.ExportDataTable();
                this.dataGridView1.DataSource = dataTable;
        }
    }
}

Imports System.Data
Imports System.Windows.Forms

Imports Spire.Xls

Namespace ExcelSheetToDataTable
	Public Partial Class Form1
		Inherits Form
		Public Sub New()
			InitializeComponent()
		End Sub

		Private Sub button1_Click(sender As Object, e As EventArgs)
			Dim workbook As New Workbook()

			workbook.LoadFromFile("..\..\parts.xls", ExcelVersion.Version97to2003)
			'Initialize worksheet
			Dim sheet As Worksheet = workbook.Worksheets(0)

			Dim dataTable As DataTable = sheet.ExportDataTable()
			Me.dataGridView1.DataSource = dataTable
		End Sub
	End Class
End Namespace